[Gate-users] How to use the positrons from proton beam irradiation for PET imaging?

Jan Gajewski jan.gajewski at ifj.edu.pl
Fri Nov 18 17:47:04 CET 2022

Dear Catarina,

please have a look at our last paper describing the workflow ProTheraMon,
which I guess does something you would expect.

Damian Borys et al 2022 Phys. Med. Biol. 67 224002
DOI 10.1088/1361-6560/ac944c


Jan Gajewski

On Fri, 18 Nov 2022 at 11:56, Catarina Magalhães <anacatarinamagalhaes at ua.pt>

> Dear Gate users,
> I am trying to simulate the production of positrons in a PMMA phantom when
> irradiated with a proton beam and use that information to obtain a
> simulated PET image. For this, I am running two separate simulations. In
> the 1st, I save the positron production in a .root file, using the
> PhaseSpaceActor. In the 2nd, I use the PhaseSpace .root file as a source
> for the PET simulation and save the PET data in a .root file. However, I
> obtain the majority of positrons in the phantom contour (is this because
> the PhaseSpaceActor only stores the particles entering and exiting the
> volumes?).
> Besides, I also tried to use the ProductionAndStoppingActor to obtain the
> positron map. However, I was not able to use the .mhd image as a source in
> the PET simulation. I already tried to search in the Gate users archive and
> did not find anything.
> Thank you in advance,
> Catarina Magalhães.
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